after, before, as soon as, since, when, till, while等
I was reading when he entered the room.
I have put the book where it was.
because, as, since, for等
I don’t want to go because I am tired of any party.
if, unless, as long as, so long as等
If you have known the news, please tell me now.
I will not trust you although you have told me the truth.
so that，so…that…, such…that…等
He ran so fast that nobody could catch up with him.
so that, in order that等
I must leave now so that I can catch the last bus.
as, just as, as if, as though等
We should do as the teacher told us.
as…as…, not so…as, than等
This house is bigger than that one.